新增：连接管理、数据查询等功能

web/src/main.js

@@ -1,10 +1,15 @@
-import { createApp } from 'vue'
+import {createApp} from 'vue'
 import ArcoVue from '@arco-design/web-vue'
 import '@arco-design/web-vue/dist/arco.css'
 import './style.css'
 import App from './App.vue'
+import {initTheme} from './composables/useTheme'
 
 const app = createApp(App)
 app.use(ArcoVue)
+
+// 在应用挂载前初始化主题
+initTheme()
+
 app.mount('#app')